Factor the extension loading code out of AccessibilityManager

chrome/browser/chromeos/accessibility/accessibility_manager.h

Index: chrome/browser/chromeos/accessibility/accessibility_manager.h
diff --git a/chrome/browser/chromeos/accessibility/accessibility_manager.h b/chrome/browser/chromeos/accessibility/accessibility_manager.h
index e35e5d37ae7e51986a83fb5417456e6afd9d2d32..7a8f8b6766931eb620a8d49b719fb1e5c8bb0f2a 100644
--- a/chrome/browser/chromeos/accessibility/accessibility_manager.h
+++ b/chrome/browser/chromeos/accessibility/accessibility_manager.h
@@ -34,6 +34,7 @@ class Profile;
 
 namespace chromeos {
 
+class AccessibilityExtensionLoader;
 class AccessibilityHighlightManager;
 
 enum AccessibilityNotificationType {
@@ -286,13 +287,8 @@ class AccessibilityManager
   ~AccessibilityManager() override;
 
  private:
-  void LoadChromeVox();
-  void LoadChromeVoxToUserScreen(const base::Closure& done_cb);
-  void LoadChromeVoxToLockScreen(const base::Closure& done_cb);
-  void UnloadChromeVox();
-  void UnloadChromeVoxFromLockScreen();
-  void PostLoadChromeVox(Profile* profile);
-  void PostUnloadChromeVox(Profile* profile);
+  void PostLoadChromeVox();
+  void PostUnloadChromeVox();
 
   void UpdateLargeCursorFromPref();
   void UpdateStickyKeysFromPref();
@@ -347,11 +343,6 @@ class AccessibilityManager
   // Profile which has the current a11y context.
   Profile* profile_;
 
-  // Profile which ChromeVox is currently loaded to. If NULL, ChromeVox is not
-  // loaded to any profile.
-  bool chrome_vox_loaded_on_lock_screen_;
-  bool chrome_vox_loaded_on_user_screen_;
-
   content::NotificationRegistrar notification_registrar_;
   std::unique_ptr<PrefChangeRegistrar> pref_change_registrar_;
   std::unique_ptr<PrefChangeRegistrar> local_state_pref_change_registrar_;
@@ -413,6 +404,8 @@ class AccessibilityManager
   std::unique_ptr<AccessibilityHighlightManager>
       accessibility_highlight_manager_;
 
+  std::unique_ptr<AccessibilityExtensionLoader> chromevox_loader_;
+
   base::WeakPtrFactory<AccessibilityManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AccessibilityManager);